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message Struct {
  string typeName = 1;
  repeated StructEntry entries = 2;

}
message StructEntry {
  string fieldName = 1;
  oneof value {
    Struct nestedStruct = 2;
    int64 numericValue = 3;
    byte byteValue = 4;
    bool booleanValue = 5;
    double doubleValue = 6;
    float floatValue = 7;
    bytes binaryValue = 8;
    string stringValue = 9;
    google.protobuf.NullValue nullValue = 10;
    
    // Collections
    List listResult = 15;
    Map mapResult = 16;
  }
}

message List {
    repeated EncodedValue elements = 1;
}

message Map {
    repeated Entry entries = 1;
}

message Entry {
    EncodedValue key = 1;
    EncodedValue value = 2;
}

message EncodedValue {
    oneof value{
        // primitives
        int32 intResult = 1;
        int64 longResult = 2;
        int32 shortResult = 3;
        int32 byteResult = 4;
        bool booleanResult = 5;
        double doubleResult = 6;
        float floatResult = 7;
        bytes binaryResult = 8;
        string stringResult = 9;
        google.protobuf.NullValue nullResult = 11;
        NewStruct newStruct = 12;
        StructByID structById = 13;

        // Result serialized using a custom serialization format. This can only be used if
        // A HandshakeRequest is sent with valueFormat set to a valid format.
        //
        // See HandshakeRequest.valueFormat.
        bytes customObjectResult = 14;

        // Collections
        List listResult = 15;
        Map mapResult = 16;
        Set setResult = 17;

         // Primitive arrays
        NumericArray intArray = 1718;
        NumericArray longArray = 1819;
        NumericArray shortArray = 1920;
        NumericArray booleanArray = 2021;
        ByteArrayArray byteArrayArray = 2122;
        ObjectArray  objectArray = 2223;

        // Used in NewStruct messages for defining fields that can be of multiple types.
        // This encoded value will contain the actual type of the field but the type
        // definition will have Object for the field type.
        // This is kind of a hack, sorry.
        EncodedValue objectField = 23;

        // if we decide to add builtin support for additional types, they can go here.
       }
}

message NewStruct {
    string typename = 1;
    int32 typeID = 2;
    repeated string fieldNames = 3;
    repeated EncodedValue fields = 4;
}

message StructByID {
    int32 typeID = 1;
    repeated EncodedValue fields = 2;
}

message List {
    repeated EncodedValue elements = 1;
}

message Map {
    repeated Entry entries = 1;
}

// All numeric values in Protobuf are encoded using the same varint encoding,
// so this encodes identically for all numbers and booleans.
message NumericArray {
    repeated int64 elements = 1;
}

message ByteArrayArray {
    repeated bytes arrays = 1;
}

message ObjectArray {
    repeated EncodedValue objects = 1;
}